BLUE CRAB irom Independencia Bay, Peru, 

 IS a tmy specimen which has been greatly 

 enlarged in this reproduction. The crab is 

 known to science as Porcellana mitra, a 

 commensal species whose host was a large 

 starfish, Stichaster aurantiacus. Drawn to 

 scale and painted in water color by Anker 

 Petersen, scientific artist, the animal is repro- 

 duced here by means of conventional four- 

 color process plates. The original specimen 

 was only two millimeters, or 0.07874 inch, in 

 length. 



PUFFER FISH photo- 

 graphed in natural color 

 in a shallow tide pool in 

 the Gulf of California is 

 reproduced from a one- 

 half-inch section of film. 

 These odd little fishes have 

 the power to inflate them- 

 selves like toy balloons, 

 becoming too large for 

 their natural enemies to 

 swallow. Others bear 

 sharp spines which are re- 

 pellant to enemies. This 

 one has the impressive 

 name, Canthigaster punc- 

 tatissimus. 



113 



